Sierra 18-3493 Water Pump Repair Kit | Honda Outboard
Sierra 18-3493 Water Pump Repair Kit | Honda Outboard — Product description
If your Honda outboard is running hot or the telltale stream is weak, the impeller is usually the culprit. This Sierra 18-3493 kit gives you the impeller, gasket, and O-ring to bring the water pump back to life on BF8D and BF9.9D engines. It's the wear-parts set, no housing included.
The impeller is the one part in your outboard's cooling system that's guaranteed to wear out. The rubber vanes take a beating every season, and once they crack or take a set, water flow drops and your Honda starts running hot. This Sierra 18-3493 kit is the fix. It's a water pump repair kit built for the Honda BF8D, BFP8D, BF9.9D, and BFP9.9D outboards from the 2002 to 2006 model years, including the K0, K2, and K3 versions.
Inside you get the impeller, the gasket, and the O-ring. That's the wear set, the parts that actually go bad. Worth knowing up front: this kit does not include the pump housing, so if yours is scored or corroded you'll want to source that separately.
If you run in sandy or silty water, plan on doing this job every year or two. It's cheap insurance against a cooked powerhead. And it's a service most owners can handle right at the ramp with basic hand tools.
Key Features
- Includes the impeller, gasket, and O-ring, the three parts that wear out first
- Fits Honda BF8D, BFP8D, BF9.9D, and BFP9.9D outboards, 2002 to 2006 (K0/K2/K3)
- Restores cooling water flow to help prevent overheating and powerhead damage
- Wear parts only, the pump housing is not included
- Sierra direct-fit aftermarket service kit
Why Buy from NVN Marine
- Authorized Sierra Marine reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Sierra 18-3493 Water Pump Repair Kit |
|---|---|
| Brand | Sierra Marine |
| Manufacturer Part Number | 18-3493 |
| UPC | 808282376925 |
| Kit Contents | Impeller, Gasket, O-Ring |
| Housing Included | No |
| Fits Engines | Honda BF8D, BFP8D, BF9.9D, BFP9.9D (2002-2006, K0/K2/K3) |
| Type | Water Pump Repair Kit |
Frequently asked questions
What's included in this kit?
The impeller, the gasket, and the O-ring. It's the wear set. The pump housing is not included, so reuse yours if it's in good shape or replace it separately if it's scored.
Which engines does it fit?
The Honda BF8D, BFP8D, BF9.9D, and BFP9.9D outboards from 2002 to 2006, including the K0, K2, and K3 versions. Check your engine's model designation before ordering.
How often should I replace the impeller?
Most owners do it every year or two, sooner if you run in sandy or silty water. A worn impeller is the number one cause of a small outboard running hot.
Can I do this job myself?
Yep. It's a common DIY service on these small Honda outboards with basic hand tools. Just take your time lining up the gasket and O-ring when you put the pump back together.
